import time
from datetime import datetime, timedelta
from flask import request, render_template, jsonify, session, url_for, redirect
from info import get_user, RET, current_app, g, db
from info.constants import ADMIN_USER_PAGE_MAX_COUNT, ADMIN_NEWS_PAGE_MAX_COUNT, QINIU_DOMIN_PREFIX
from info.models import User, News, Category
from info.utility.qiniuyun import qiniu_push
from . import admin_bp


@admin_bp.route('/login', methods=['POST', 'GET'])
@get_user
def admin_login():
    if request.method == 'GET':
        user = g.user
        if user:
            if user.is_admin:
                session['is_admin'] = True
                return redirect(url_for('admin.admin_index'))
        return render_template('admin/login.html', errmsg="")
    if request.method == 'POST':
        user_name = request.form.get('username')
        password = request.form.get('password')
        if not all([user_name, password]):
            return render_template('admin/login.html', errmsg="参数不足")
        try:
            user = User.query.filter(User.mobile == user_name).first()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/login.html', errmsg="数据库查询错误")
        if not user:
            return render_template('admin/login.html', errmsg="用户不存在")
        if not user.check_passowrd(password):
            return render_template('admin/login.html', errmsg="密码错误")
        if not user.is_admin:
            return render_template('admin/login.html', errmsg="权限错误")
        session["user_id"] = user.id
        session["nick_name"] = user.nick_name
        session["mobile"] = user.mobile
        session["is_admin"] = True
        return redirect(url_for('admin.admin_index'))


@admin_bp.route('/', methods=['POST', 'GET'])
@get_user
def admin_index():
    user = g.user
    if not user:
        return redirect(url_for('admin.admin_login'))
    user = user.to_dict()
    if user.get('avatar_url'):
        image_url = user.get('avatar_url')
    else:
        image_url = None
    context = {
        'user': user,
        'image_url': image_url
    }
    return render_template('admin/index.html', context=context)


@admin_bp.route('/user_count')
def user_count():
    # 查询总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin is not True).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询月新增数
    mon_count = 0
    try:
        now = time.localtime()
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询日新增数
    day_count = 0
    try:
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin != True, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询图表信息
    # 获取到当天00:00:00时间

    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')
    # 定义空数组，保存数据
    active_date = []
    active_count = []

    # 依次添加数据，再反转
    for i in range(0, 31):
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()

    data = {"total_count": total_count, "mon_count": mon_count, "day_count": day_count, "active_date": active_date,
            "active_count": active_count}

    return render_template('admin/user_count.html', data=data)


@admin_bp.route('/user_list')
def user_list():
    """获取用户列表"""

    # 获取参数
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 设置变量默认值
    users = []
    current_page = 1
    total_page = 1

    # 查询数据
    try:
        paginate = User.query.filter(User.is_admin != True).order_by(User.last_login.desc()).paginate(page, ADMIN_USER_PAGE_MAX_COUNT, False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    users_list = [user.to_admin_dict() for user in users]
    context = {"total_page": total_page,
               "current_page": current_page,
               "users": users_list}
    return render_template('admin/user_list.html', data=context)


@admin_bp.route('/news_review')
def news_review():
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 设置变量默认值
    news = []
    current_page = 1
    total_page = 1
    # 查询条件列表
    condition_list = [News.status != 0]
    condition_key = request.args.get('keywords')
    if condition_key:
        condition_list.append(News.title.contains(condition_key))
    # 查询数据
    try:
        paginate = News.query.filter(*condition_list).order_by(News.create_time.desc()).paginate(page, ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    news_list = [new.to_review_dict() for new in news]
    context = {"total_page": total_page,
               "current_page": current_page,
               "news_list": news_list}
    return render_template('admin/news_review.html', data=context)


@admin_bp.route('/news_review_detail', methods=['POST', 'GET'])
def news_review_detail():
    if request.method == 'GET':
        news_id = request.args.get("news_id")
        if not news_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        # 通过id查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        # 返回数据
        data = {"news": news.to_dict()}
        return render_template('admin/news_review_detail.html', data=data)
    if request.method == 'POST':
        # 执行审核操作

        # 1.获取参数
        news_id = request.json.get("news_id")
        action = request.json.get("action")

        # 2.判断参数
        if not all([news_id, action]):
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        if action not in ("accept", "reject"):
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        news = None
        try:
            # 3.查询新闻
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

        # 4.根据不同的状态设置不同的值
        if action == "accept":
            news.status = 0
        else:
            # 拒绝通过，需要获取原因
            reason = request.json.get("reason")
            if reason:
                news.reason = reason
            news.status = -1

        # 保存数据库
        try:
            db.session.commit()
        except Exception as e:
            current_app.logger.error(e)
            db.session.rollback()
            return jsonify(errno=RET.DBERR, errmsg="数据保存失败")
        return jsonify(errno=RET.OK, errmsg="操作成功")


@admin_bp.route('/news_edit')
def news_edit():
    """返回新闻列表"""

    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        # 查询
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    context = {"total_page": total_page,
               "current_page": current_page,
               "news_list": news_dict_list}

    return render_template('admin/news_edit.html', data=context)


@admin_bp.route('/news_edit_detail', methods=['POST', 'GET'])
def news_edit_detail():
    if request.method == 'GET':
        """新闻编辑详情"""

        # 获取参数
        news_id = request.args.get("news_id")

        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询分类的数据
        categories = Category.query.all()
        categories_li = []
        for category in categories:
            c_dict = category.to_dict()
            c_dict["is_selected"] = False
            if category.id == news.category_id:
                c_dict["is_selected"] = True
            categories_li.append(c_dict)
        # 移除`最新`分类
        categories_li.pop(0)

        data = {"news": news.to_dict(), "categories": categories_li}
        return render_template('admin/news_edit_detail.html', data=data)
    elif request.method == 'POST':
        news_id = request.form.get("news_id")
        title = request.form.get("title")
        digest = request.form.get("digest")
        content = request.form.get("content")
        index_image = request.files.get("index_image")
        category_id = request.form.get("category_id")
        # 1.1 判断数据是否有值
        if not all([title, digest, content, category_id]):
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
        if not news:
            return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

        # 1.2 尝试读取图片
        if index_image:
            try:
                index_image = index_image.read()
            except Exception as e:
                current_app.logger.error(e)
                return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

            # 2. 将标题图片上传到七牛
            try:
                key = qiniu_push.push(index_image)
            except Exception as e:
                current_app.logger.error(e)
                return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
            news.index_image_url = QINIU_DOMIN_PREFIX + key
        # 3. 设置相关数据
        news.title = title
        news.digest = digest
        news.content = content
        news.category_id = category_id

        # 4. 保存到数据库
        try:
            db.session.commit()
        except Exception as e:
            current_app.logger.error(e)
            db.session.rollback()
            return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
        # 5. 返回结果
        return jsonify(errno=RET.OK, errmsg="编辑成功")


@admin_bp.route('/news_category')
def get_news_category():
    # 获取所有的分类数据
    categories = Category.query.all()
    # 定义列表保存分类数据
    categories_dicts = []

    for category in categories:
        # 获取字典
        cate_dict = category.to_dict()
        # 拼接内容
        categories_dicts.append(cate_dict)

    categories_dicts.pop(0)
    # 返回内容
    return render_template('admin/news_type.html', data={"categories": categories_dicts})


@admin_bp.route('/add_category', methods=["POST"])
def add_category():
    """修改或者添加分类"""

    category_id = request.json.get("id")
    category_name = request.json.get("name")
    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 判断是否有分类id
    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="查询数据失败")

        if not category:
            return jsonify(errno=RET.NODATA, errmsg="未查询到分类信息")

        category.name = category_name
    else:
        # 如果没有分类id，则是添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)

    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    return jsonify(errno=RET.OK, errmsg="保存数据成功")
